JP4427628B1 - Printing cylinder apparatus and rotary printing press provided with printing cylinder apparatus - Google Patents

Abstract

It is an object of the present invention to provide a printing cylinder apparatus and a rotary printing press equipped with the printing cylinder apparatus that can realize improvement in printing quality, printing efficiency, and reduction in running cost.
The printing cylinder apparatus 1 includes a printing cylinder 10, a drive-side bearing support sleeve 20, a printing cylinder drive shaft 30, an operation-side bearing support sleeve 50, a printing cylinder position adjusting shaft 60, and the like.
[Selection] Figure 1a

Description

  The present invention relates to a printing cylinder apparatus and a rotary printing press provided with the printing cylinder apparatus.

A typical rotary offset printing press includes a printing cylinder (plate cylinder, blanket cylinder and impression cylinder), an inking device for transferring the filmed ink to the plate cylinder, and a dampening for transferring a predetermined amount of moisture. And a water supply device.
In the above-described offset reversal printing machine, first, the inking device transfers the ink ejected in a required amount for each printing column corresponding to the printing image to the printing plate mounted on the plate cylinder, and transfers it. The dampening device supplies water to the non-image area. Next, the ink is transferred to a blanket cylinder. Subsequently, the ink transferred to the blanket cylinder is transferred to the printing paper supplied from the paper feeding unit. In this way, the print image is printed on one side or both sides of the printing paper.

Further, the printing cylinder is variously arranged according to the type of the printing unit.
Next, the arrangement of the printing cylinder will be described with reference to the drawings.
FIG. 5 is a schematic view for explaining the arrangement of the printing cylinders related to the present invention.
In FIG. 5A, the BB unit is shown. In the BB unit, a pair of plate cylinders P are installed horizontally, and a blanket cylinder B is arranged for each plate cylinder P, and printing paper is fed between the pair of blanket cylinders B.

  In FIG. 5 (b), a satellite unit is shown. In the satellite unit, an impression cylinder I having a circumferential length approximately twice the circumferential length of the plate cylinder P and the blanket cylinder B is installed at the center. A blanket cylinder B, a plate cylinder P, an inking device (not shown) and a dampening solution device (not shown) are arranged on the peripheral surface of the impression cylinder I, and the printing paper is the peripheral surface of the impression cylinder I. Is sent to. This unit can perform four-sided printing on one side.

In FIG. 5C, a horizontal BB unit is shown. In the horizontal BB unit, two sets of blanket cylinders B and plate cylinders P are arranged substantially vertically, and printing paper is fed between a pair of blanket cylinders B. This unit can perform duplex printing.
In FIG.5 (d), the horizontal BB unit provided with the impression cylinder is shown. In this horizontal BB unit, a set of blanket cylinder B and plate cylinder P are arranged substantially perpendicularly to one impression cylinder I, and printing paper is fed between the impression cylinder I and blanket cylinder B. This unit can perform single-sided printing.

FIG. 6 is a schematic view for explaining the arrangement of the printing cylinders in the tower unit related to the present invention.
In FIG. 6A, an arched tower unit is shown. In this arched tower unit, BB units shown in FIG. 5A are stacked in four stages, and simultaneous four-color printing can be performed on both sides of the printing paper.
FIG. 6B shows an H-shaped tower unit. In this H-shaped tower unit, the BB units shown in FIG. 5A are stacked in four stages (the second and fourth BB units from the bottom are installed by rotating 180 degrees). Thus, simultaneous four-color printing can be performed on both sides of the printing paper.

In any of these cases, the ink transferred to the plate cylinder P is transferred to the blanket cylinder B, and the blanket cylinder B prints a print image on the printing paper. At this time, it is necessary to deliver an amount of ink necessary for image formation between the plate cylinder P and the blanket cylinder B. Further, it is necessary to transfer the ink from the blanket cylinder B to the printing paper between the blanket cylinders B or between the blanket cylinder B and the impression cylinder I. For this reason, the cylinders that are substantially in line contact with each other are uniformly pressurized.
The pressure applied to the plate cylinder P and the blanket cylinder B is referred to as transfer pressure. Further, the pressure applied between the blanket cylinders B or between the blanket cylinder B and the impression cylinder I, that is, the pressure applied to transfer the ink onto the printing paper is called printing pressure.

By the way, in the recent printing industry, there is a demand for a rotary printing press to improve printing quality, improve printing efficiency, and reduce running costs.
First, with regard to print quality, a technique has been developed that makes the above-described transfer pressure and printing pressure uniform at the printable speed of the printing press (in any speed situation from the low speed range to the high speed range). This technique is a basic and important technique in offset printing. In addition, technologies related to printing elements such as an inking method and a dampening water supply method have been developed. Further, various technologies such as blanket materials and structures to be mounted on the blanket cylinder, components of the ink itself, fountain solution, and printing paper have been proposed in various fields.

As for the printing efficiency, a technique for increasing the printing speed and a technique for printing on a printing paper whose width direction is widened by the page width of the printed matter have been proposed.
For example, in order to increase the printing speed, in the final process of the rotary printing press, the processing speed of the folding machine that folds the printed printing paper is improved, the device that guides the folding paper after printing, and the printing paper It is necessary to stabilize the tension from the low speed range to the high speed range in the running process. That is, development of various technologies is required.

Further, for the enlargement of the printable lateral width, it is necessary to extend the lateral width of the printing cylinder, the inking device, and the fountain solution device described above. That is, it is necessary to lengthen a rotating body such as a printing cylinder.
For example, if the printing cylinder is lengthened without changing the support structure of the printing cylinder, the printing cylinder is bent, and each printing cylinder cannot maintain a uniform pressure. This makes it difficult to deliver an appropriate amount of ink or dampening water, which adversely affects printing quality.

Next, a rotary printing press related to the present invention will be described with reference to the drawings.
FIG. 7 is a schematic view for explaining a rotary printing press related to the present invention.
In FIG. 7, the rotary printing press related to the present invention is a newspaper offset rotary press 200. The newspaper offset rotary printing press 200 includes a plurality of paper feeding units 3, printing units U 1, U 2, U 3, U 4, U 5, a rail frame unit 4, and a folding unit 5.

  The paper feeding unit 3 supplies the printing paper to the printing units U1, U2, U3, U4, and U5 while applying a certain amount of braking to the roll-shaped winding paper. Further, each paper feed unit 3 is installed so as to correspond to the printing units U1, U2, U3, U4, and U5, and a generally manufactured web having a width of 4 pages is used as the printing unit U1, U2. , U3, U4, U5.

  The printing units U1, U2, U3, U4, and U5 print on one or both sides of the printing paper supplied from the paper feeding unit 3. That is, the printing units U1 and U5 are H-shaped tower units that can simultaneously print up to four colors on both sides of the printing paper. The printing units U2, U3, and U4 are BB units that can print up to two colors on both sides of the printing paper at the same time.

  The rail frame part 4 cuts the printed printing paper (4-page running paper) at the center in the running direction as necessary. Subsequently, the cut printing paper (running paper having a width of two pages) is overlapped in a specified order and guided to the folding unit 5.

Further, the folding unit 5 vertically folds the printing paper (2-page running paper) superimposed by the rail frame unit 4 to one page width, then cuts it to one page length, Fold it up and discharge it.
The newspaper rotary offset printing press 200 having the above-described configuration can normally print a total of 40 pages of up to 16 four-color pages and 24 two-color pages.

In the printing units U1, U2, U3, U4, and U5, the blanket cylinder B with the blanket and the plate cylinder P with the printing plate are approximately four pages wide in the horizontal direction and the circumference is the newspaper. There are two pages in the vertical direction.
In the newspaper offset rotary printing press 200, a general blanket size is 2 pages wide × 2 pages long in the newspaper, and two blankets are mounted on the blanket cylinder B.
Further, the size of the printing plate to be mounted on the plate cylinder P is generally 1L1W, 1L2W, 2L1W, or 2L2W (L is the length of one newspaper page (the length in the vertical direction), and W Is the width of one newspaper page (the length in the horizontal direction). Therefore, in order to fill the peripheral surface of the plate cylinder P, for example, when the size of the printing plate is 1L1W, eight printing plates are mounted, and when the printing plate size is 2L2W, two printing plates Is installed.

  Further, the newspaper offset rotary printing press 200 may be reattached to the plate of the replacement article between the start of printing and the completion of printing. As this replacement article, for example, an article referred to as a local version (an article that varies depending on the delivery area), an article in which a quick report of progress such as sports and elections is important, or a commercial article that varies depending on the delivery area or the like. When the article is replaced, the printing plate on which the page is printed is reattached to the replacement article printing plate.

At this time, since the circumference of the plate cylinder P is two pages in the longitudinal direction of the newspaper, it is necessary to exchange two printing plates in order to replace an article for one page. As a result, running cost increases and becomes a heavy burden in printing with a small number of copies and printing with many plate changes. Further, since the time for exchanging two printing plates is longer than the time for exchanging one printing plate, the printing efficiency also decreases. For this reason, there is a demand for a rotary printing press equipped with a printing cylinder device having a plate cylinder P with a circumference of one page in the newspaper longitudinal direction.
Further, even in the plate cylinder P that does not require replacement of the printing plate, the printing plate that has been required for two sheets is reduced to one by changing the circumference from two pages in the newspaper vertical direction to one page in the newspaper vertical direction. be able to.

  The reason why a plate cylinder P having a circumference of one page in the longitudinal direction of the newspaper is desired is an improvement in printing durability in recent printing plates. That is, recent printing plates have adverse effects such as pressurized contact (contact with the blanket cylinder B, ink form roller and dampening roller), slip, or paper dust adhering to the running paper. On the other hand, the life until the image portion (the portion where the ink adheres) and the non-image portion (the portion where the dampening water adheres and the ink does not adhere) is damaged is improved. Therefore, the normal total number of copies printed by the web offset press 200 for newspapers has been developed to the extent that no damage occurs even if the circumferential length of the plate cylinder P is one page in the newspaper longitudinal direction.

As described above, in the recent printing industry, there is a demand for rotary printing presses to improve printing quality, improve printing efficiency, and reduce running costs. Even when the cylinder is rotating at a high speed, a technique for making the transfer pressure and the printing pressure uniform is fundamental and important in offset printing.
Further, halving the circumferential length of the plate cylinder P means reducing the cylinder diameter to approximately ½. In the conventional technique (for example, the conventional printing cylinder technique described in Patent Document 1 described later), the bending of the plate cylinder P itself is caused by the surface rubber layer or cushion layer of the blanket mounted on the blanket cylinder B. The amount will not be able to compensate. That is, it is impossible to obtain a uniform pressure between the printing cylinders, which is the basis of the print quality, here a transfer pressure.

Various techniques have been developed to overcome the situation described above.
For example, Patent Document 1 discloses a technique of a printing cylinder in which concentric ring-shaped grooves are drilled in the axial direction from both end surfaces in a sleeve that supports a journal portion of the printing cylinder. In addition, this printing cylinder is filled with an elastic member inside a ring-shaped groove formed in the axial direction.

JP-A-9-141826

However, in Patent Document 1, the printing cylinder is deformed so that both side end portions (portions corresponding to the ring-shaped grooves) of the middle portion of the cylinder cancel the deflection of the central portion in the axial direction of the middle portion of the cylinder. It is described that uniform printing pressure can be obtained. However, in this technology, when the printing cylinder is rotated at high speed while the central part in the axial direction of the middle part of the cylinder is bent, the printing cylinder itself causes a bounce phenomenon due to the reaction force of the bending, and the uniform pressure state There was a problem that could not be obtained. In addition, problems such as an increase in load applied to the bearing and wear of the middle part due to bouncing are conceived.
Further, as described above, a basic and important technique in offset printing, that is, even when the printing cylinder rotates at a high speed, the rotary printing press is made uniform by uniforming the transfer pressure and the printing pressure. On the other hand, improvement of printing quality, improvement of printing efficiency, reduction of running cost, etc. are desired.

  The present invention has been proposed in order to solve the above-described problems, and a printing cylinder apparatus and printing capable of realizing improvement in printing quality, improvement in printing efficiency, reduction in running cost, and the like. An object of the present invention is to provide a rotary printing press equipped with a cylinder device.

  In order to achieve the above object, a printing cylinder apparatus according to the present invention includes a printing cylinder having insertion holes formed on both end faces, an insertion part inserted into the insertion hole, and a bearing having an attachment part fixed to the frame. The printing apparatus includes a support member and a printing cylinder bearing that is provided at least at the tip of the insertion portion and rotatably supports the printing cylinder.

  Moreover, the rotary printing press provided with the printing cylinder apparatus of this invention is the structure which used the printing cylinder apparatus as described in any one of Claims 1-5 for at least one of a plate cylinder, a blanket cylinder, and an impression cylinder. It is as.

  According to the printing cylinder apparatus and the rotary printing press equipped with the printing cylinder apparatus of the present invention, it is possible to improve printing quality, increase printing efficiency, and reduce running costs.

FIG. 1 a shows a schematic cross-sectional view of the main part on the drive side of the printing cylinder apparatus according to the first embodiment of the present invention. FIG. 1 b is a schematic cross-sectional view of the main part on the operation side of the printing cylinder apparatus according to the first embodiment of the present invention. FIG. 2 a shows a schematic cross-sectional view of the main part on the drive side of the printing cylinder apparatus according to the second embodiment of the present invention. FIG. 2 b shows a schematic cross-sectional view of the main part on the operation side of the printing cylinder apparatus according to the second embodiment of the present invention. FIG. 3 a shows a schematic cross-sectional view of the main part on the drive side of the printing cylinder apparatus according to the third embodiment of the present invention. FIG. 3b shows a schematic cross-sectional view of the main part on the operation side of the printing cylinder apparatus according to the third embodiment of the present invention. FIG. 4 is a schematic view for explaining a rotary printing press according to an embodiment of the present invention. FIG. 5 is a schematic view for explaining the arrangement of the printing cylinders related to the present invention. FIG. 6 is a schematic view for explaining the arrangement of the printing cylinders in the tower unit related to the present invention. FIG. 7 is a schematic view for explaining a rotary printing press related to the present invention.

[First embodiment of printing cylinder apparatus]
FIG. 1 a shows a schematic cross-sectional view of the main part on the drive side of the printing cylinder apparatus according to the first embodiment of the present invention.
FIG. 1 b is a schematic cross-sectional view of the main part on the operation side of the printing cylinder apparatus according to the first embodiment of the present invention.
1A and 1B, a printing cylinder apparatus 1 according to the present embodiment includes a printing cylinder 10, a drive-side bearing support sleeve 20, a printing cylinder drive shaft 30, an operation-side bearing support sleeve 50, a printing cylinder position adjusting shaft 60, and the like. It is as a configuration provided. The printing cylinder apparatus 1 is normally used in place of the plate cylinder P of the newspaper rotary offset printing press 200 described above. In FIGS. 1a and 1b, the plate clamping device and the like are omitted.
Moreover, although the printing cylinder apparatus 1 of this embodiment is used instead of the plate cylinder P of the newspaper offset rotary printing press 200, it is not limited to this. That is, the printing cylinder apparatus 1 can be used for a printing cylinder (at least one of a plate cylinder, a blanket cylinder, and an impression cylinder) of a rotary printing press provided with printing units having various configurations.

(Print cylinder)
The printing cylinder 10 has a size that is approximately 4 pages wide in the axial direction in the axial direction and one page in the longitudinal direction of the newspaper. In the printing cylinder 10, insertion holes 11 having predetermined depths and steps are formed along the central axis on both end faces (driving side end face and operation side end face).
In addition, the hole diameter (the hole diameter at the position corresponding to the insertion portion 22) and the hole depth (the hole depth at the position corresponding to the printing cylinder bearing 24) of the two insertion holes 11 are not particularly limited. Absent.
In the present embodiment, the insertion holes 11 having substantially the same shape are formed on both end faces of the printing cylinder 10, but the present invention is not limited to this. For example, the insertion holes 11 having different shapes are formed. Also good.

  Further, as shown in FIG. 1a, the insertion hole 11 on the driving side is screwed to the middle step 111 where the outer ring of the printing cylinder bearing 24 abuts and the flange of the drive transmission member 12 in the depth direction of the hole. The lower step 112 and the insertion hole into which the drive transmission member 12 is inserted are formed.

The drive transmission member 12 includes the above-described flange and a cylindrical portion in which a spline hole is processed as a torque transmission portion that transmits torque to the printing cylinder 10 to which the flange is screwed. The central axis of the spline hole coincides with the central axis of the printing cylinder 10.
Here, the printing cylinder drive shaft 30 can be easily attached by using the torque transmission portion as the spline hole and the spline shaft 33. Further, since the drive transmission member 12 can move in the axial direction with the spline shaft 33 inserted in the spline hole, the printing cylinder 10 can move in the axial direction.
In the present embodiment, the torque transmission portion is a spline hole and spline shaft 33 that are movable in the axial direction, but is not limited to this. For example, an internal gear that is movable in the axial direction and an external gear that is fitted to the internal gear may be used.

  The drive side insertion hole 11 is inserted into the middle step 111 of the drive side until the outer ring of the printing cylinder bearing 24 abuts against it. Further, a bearing retaining ring (as a fixing member in the axial direction of the outer ring of the printing cylinder bearing 24) 113 for holes) is provided. Almost the same way, the middle step 111 of the insertion hole 11 on the operation side is inserted until the outer ring of the printing cylinder bearing 54 on the operation side hits, and the outer ring of the printing cylinder bearing 54 is fixed in the axial direction. A bearing retaining ring (for hole) 113 is provided as a member.

  Also, as shown in FIG. 1b, the insertion hole 11 on the operation side has a middle step 111 where the outer ring of the printing cylinder bearing 54 abuts in the depth direction of the hole, and a flange 62 of the printing cylinder position adjusting shaft 60. The lower step 112 to be screwed and the insertion hole into which the insertion portion 63 is inserted are formed.

  Further, the flange portion 62 of the printing cylinder position adjusting shaft 60 has substantially the same shape as the flange of the drive transmission member 12, and the fitting portion 63 has substantially the same outer diameter and short length as the cylindrical portion of the drive transmission member 12. It is a cylindrical shape having an axial length. As described above, the insertion portion 63 is inserted into the insertion hole located at the distal end portion of the insertion hole 11, thereby causing the central axis of the printing cylinder 10 and the central axis of the printing cylinder position adjusting shaft 60 to coincide with each other. The flange portion 62 is screwed to the lower portion step 112.

(Drive-side bearing support sleeve)
The drive side bearing support sleeve 20, which is a bearing support member, includes a substantially cylindrical mounting portion 21 that is inserted into the boring hole of the drive side frame 41 and a substantially cylindrical insertion that is inserted into the insertion hole 11 of the printing cylinder 10. The configuration includes a portion 22 and a flange portion 23 integrally formed on the drive side of the mounting portion 21.

  In the mounting portion 21, the flange portion 23 is screwed to the driving side frame 41 in a state where the mounting portion 21 is fitted into the boring hole of the driving side frame 41. Further, a predetermined step is formed on the operation side of the inner surface of the mounting portion 21 and is inserted until the outer ring of the bearing 36 fixed to the printing cylinder drive shaft 30 comes into contact. Furthermore, an outer ring of a bearing 34 fixed to the printing cylinder drive shaft 30 is fitted on the drive side of the inner surface of the attachment portion 21. The outer ring of the bearing 34 is positioned and fixed by a bearing retainer 28 screwed onto the end surface on the driving side of the mounting portion 21 so that the printing cylinder driving shaft 30 does not come out to the driving side.

The insertion portion 22 has an outer diameter smaller than the outer diameter of the attachment portion 21 and has a substantially identical thickness, and is formed integrally with the attachment portion 21. The insertion portion 22 has a predetermined step for attaching the inner ring of the printing cylinder bearing 24, an outer peripheral surface, and a male screw at the distal end portion.
Here, the central axis of the outer peripheral surface (usually the same as the central axis of the drive-side bearing support sleeve 20 because it is turned or cylindrically polished) matches the central axis of the printing cylinder 10. The drive side bearing support sleeve 20 is fixed to the drive side frame 41.
If it is difficult to match the center axis of the drive-side bearing support sleeve 20 and the center axis of the printing cylinder 10 due to processing circumstances such as the boring hole of the drive-side frame 41, The attachment portion 21 in contact with the center axis of the printing cylinder 10 may be eccentrically processed by a minute distance (for example, several mm) for adjustment.

The printing cylinder bearing 24 is a cylindrical roller bearing (a type without a collar) in which an outer ring and an inner ring can be relatively moved and separated in the axial direction. For example, in an N-shaped cylindrical roller bearing, a roller is provided on an inner ring, and an outer ring can be moved and separated in an axial direction. Further, the inner end of the printing cylinder bearing 24 is fitted until the front end of the insertion part 22 is inserted into the inner ring of the printing cylinder bearing 24 until it hits the step, and the bearing lock nut is interposed via the stepped collar 25. It is fixed by a washer 27 and a bearing lock nut 26.
Thus, the printing cylinder bearing 24 can separate the outer ring and the inner ring. Therefore, first, the outer ring of the printing cylinder bearing 24 is fixed by the bearing retaining ring (for hole) 113, and then the inner ring and the rollers of the printing cylinder bearing 24 fixed to the insertion portion 22 are used as the outer ring of the printing cylinder bearing 24. Inserting and printing cylinder bearing 24 can be assembled.
Further, the printing cylinder bearing 24 has an outer ring and an inner ring that are relatively movable in the axial direction. Therefore, the printing cylinder 10 can move by a predetermined distance in the axial direction. Further, the printing cylinder bearing 24 receives only a radial load.
The printing cylinder bearing 24 is not limited to a cylindrical roller bearing. For example, like a needle roller bearing, the outer ring and the inner ring can move and separate in the axial direction and receive a radial load. Any bearing can be used.

(Print cylinder drive shaft)
The printing cylinder drive shaft 30 includes a flange portion 31, a male screw 32, a spline shaft 33, and the like from the drive side to the operation side. The printing cylinder drive shaft 30 has a predetermined step in the vicinity of the flange portion 31. The bearing 34 is fitted until the inner ring hits the step, then the distance collar 35 is fitted, and then the bearing 36 is fitted, which are for the bearing lock nut via the stepped collar 37. It is fixed by a washer 39 and a bearing lock nut 38. That is, the bearing lock nut 38 is fastened to the male screw 32.
The bearings 34 and 36 are generally bearings that can receive a radial load and an axial load.

  The printing cylinder drive shaft 30 to which the bearing 34, the bearing 36, and the like are attached is inserted into the drive-side bearing support sleeve 20 in a state where the central axis coincides with the central axis of the printing cylinder 10. By this insertion, the spline shaft 33 is fitted into the spline hole of the drive transmission member 12. Further, as described above, the printing cylinder drive shaft 30 is inserted until the outer ring of the bearing 36 hits a predetermined step formed on the inner surface of the mounting portion 21. An outer ring of a bearing 34 fixed to the printing cylinder drive shaft 30 is inserted. The outer ring of the bearing 34 is positioned and fixed by a bearing retainer 28 screwed to the end surface on the drive side of the mounting portion 21 so that the printing cylinder drive shaft 30 does not come out to the drive side. Thereby, the printing cylinder drive shaft 30 is positioned in the axial direction.

Next, the printing cylinder driving shaft 30 has a printing cylinder driving gear 42 for receiving rotational driving from a driving source (not shown) screwed to a flange portion 31 protruding to the driving side of the driving side frame 41. Further, the mounting hole of the printing cylinder driving gear 42 is an arc-shaped elongated hole corresponding to the central axis of the printing cylinder driving gear 42 that passes through the bolt to be fixed, so that the position in the circumferential direction of the printing cylinder 10 is adjusted. can do.
The drive source may be a gear train from a general motor, or the printing cylinder drive gear 42 is replaced with a bevel gear, and the corresponding bevel gear is attached to and engaged with the tip of a motor (not shown), You may drive directly from a motor.

(Operation side bearing support sleeve)
The operation side bearing support sleeve 50 which is a bearing support member includes a substantially cylindrical mounting portion 51 inserted into the boring hole of the operation side frame 43 and a substantially cylindrical insertion inserted into the insertion hole 11 of the printing cylinder 10. The configuration includes a portion 52 and a flange portion 53 integrally formed on the operation side of the attachment portion 51.

  In the mounting portion 51, the flange portion 53 is screwed to the operation side frame 43 in a state where the attachment portion 51 is fitted in the boring hole of the operation side frame 43. The flange 53 and the attachment 51 are provided with insertion holes for inserting the bearing retainers 67 and the like from the operation side. In this insertion hole, there are a bearing retainer 67 for holding an outer ring of a bearing 64 whose inner ring is fixed to the printing cylinder position adjusting shaft 60 by a bearing lock nut 65, and a bearing retainer 68 screwed to the bearing retainer 67. It is inserted so as to be movable in the axial direction.

The bearing retainer 68 has a female screw 681 cut at the end face, and the bearing retainer 67 and the bearing retainer 68 can be moved in the axial direction using the female screw 681. Although this moving means is not shown, for example, a position adjusting bolt supported in a state where it does not move in the axial direction may be used. As a result, when the position adjusting bolt is tightened into the female screw 681 (turned clockwise), the bearing retainer 67 and the bearing retainer 68 move to the operating side, and when loosened (turned counterclockwise), The bearing retainer 67 and the bearing retainer 68 move to the drive side. That is, by tightening or loosening the position adjusting bolt, the printing cylinder position adjusting shaft 60 moves to the driving side or the operation side (left and right direction in FIGS. 1a and 1b), and the printing cylinder 10 is moved. .
The moving means is not limited to the configuration using the position adjusting bolt, and may be a configuration using a cylinder for moving the bearing retainer 68, for example. Furthermore, it is good also as a structure which can be remotely operated using the stepping motor etc. which rotate a position adjustment volt | bolt.

The insertion portion 52 has an outer diameter that is smaller than the outer diameter of the attachment portion 51, and is formed integrally with the attachment portion 51. The insertion portion 52 has a predetermined step, an outer peripheral surface, and a male screw for attaching an inner ring of the printing cylinder bearing 54 at the distal end.
Here, the central axis of the outer peripheral surface (usually the same as the central axis of the operation-side bearing support sleeve 50 because it is turned or cylindrically polished) and the central axis of the printing cylinder 10 are made to coincide with each other. The operation side bearing support sleeve 50 is fixed to the operation side frame 43.
As described above, when it is difficult to match the central axis of the operation-side bearing support sleeve 50 and the central axis of the printing cylinder 10 due to processing circumstances such as a boring hole of the operation-side frame 43, the operation-side frame 43. The attachment portion 51 that comes into contact with the boring hole may be eccentrically processed with respect to the central axis of the printing cylinder 10 by a minute distance (for example, several mm) for adjustment.

The printing cylinder bearing 54 is substantially the same as the printing cylinder bearing 24 described above, and is a cylindrical roller bearing (type without a collar) in which an outer ring and an inner ring can be moved and separated relative to each other in the axial direction.
Further, the inner end of the printing cylinder bearing 54 is fitted until the front end of the insertion section 52 is inserted into the inner ring of the printing cylinder bearing 54, and the bearing lock nut is interposed via the stepped collar 55. It is fixed by a washer 57 and a bearing lock nut 56.
Thus, the printing cylinder bearing 54 can separate the outer ring and the inner ring. Therefore, first, the outer ring of the printing cylinder bearing 54 is fixed by the bearing retaining ring (for hole) 113, and then the inner ring and the roller of the printing cylinder bearing 54 fixed to the insertion portion 52 are used as the outer ring of the printing cylinder bearing 54. Inserting and printing cylinder bearing 54 can be assembled. As will be described later, the outer ring of the printing cylinder bearing 54 is inserted until the printing cylinder position adjusting shaft 60 is attached to the printing cylinder 10 until it abuts against the middle step 111 of the insertion hole 11 on the operation side. It is fixed by a ring (for hole) 113.
Further, the printing cylinder bearing 54 has an outer ring and an inner ring that are relatively movable in the axial direction. Therefore, the printing cylinder 10 can move by a predetermined distance in the axial direction. Further, the printing cylinder bearing 54 receives only a radial load.
The printing cylinder bearing 54 is not limited to a cylindrical roller bearing. For example, like a needle roller bearing, the outer ring and the inner ring can be moved and separated in the axial direction and receive a radial load. Any bearing can be used.

(Print cylinder position adjustment axis)
The printing cylinder position adjusting shaft 60 has a flange portion 62 and a fitting portion 63 formed at an end portion on the driving side, and a male screw 61 and the like are formed at an end portion on the operation side.
The fitting portion 63 has a cylindrical shape and is inserted into the fitting hole of the insertion hole 11 on the operation side, and the flange portion 62 is screwed to the lower portion step 112. The flange portion 62 is screwed before the insertion portion 52 is inserted into the insertion hole 11. At this time, since the fitting portion 63 functions as a positioning portion, the printing cylinder position adjusting shaft 60 is attached to the printing cylinder 10 in a state where the central axis coincides with the central axis of the printing cylinder 10. The printing cylinder position adjusting shaft 60 is inserted into the insertion hole 11 before the printing cylinder 10 is positioned in a predetermined boring hole.

Next, in this embodiment, after the printing cylinder position adjusting shaft 60 is attached to the printing cylinder 10, the outer ring of the printing cylinder bearing 54 is inserted until it hits the middle step portion 111 of the insertion hole 11 on the operation side, and the bearing It is fixed by a retaining ring (for hole) 113.
Subsequently, the insertion portion 52 of the operation side bearing support sleeve 50 passes through the boring hole of the operation side frame 43 in a state where the printing cylinder position adjusting shaft 60 is positioned substantially at the center of the boring hole of the operation side frame 43. The operation side bearing support sleeve 50 is inserted into the insertion hole 11 and fixed to the operation side frame 43. As a result, the printing cylinder bearing 54 supports the printing cylinder 10 by engaging the inner ring and the outer ring.

Further, the printing cylinder position adjusting shaft 60 has a predetermined step in the vicinity of the male screw 61 where the inner ring of the bearing 64 abuts.
Here, a procedure for attaching the bearing 64 will be described.
First, the outer ring of the bearing 64 is fitted into the bearing retainer 67, and then the bearing retainer 67 to which the bearing 64 is attached is fitted into the insertion hole of the attachment portion 51. Subsequently, the bearing retainer 67 to which the bearing 64 is attached is fitted into the insertion hole of the attachment portion 51 until the inner ring of the bearing 64 hits a predetermined step near the male screw 61. Next, the inner ring of the bearing 64 is fixed by the bearing lock nut washer 66 and the bearing lock nut 65, and then the bearing retainer 68 is screwed to the bearing retainer 67.
The bearing 64 is generally a bearing that can receive a radial load and an axial load.

Next, the operation of the printing cylinder apparatus 1 having the above configuration will be described.
First, a drive motor (not shown) transmits torque to the printing cylinder drive gear 42 via a gear train or directly.
Next, the printing cylinder drive shaft 30 rotates, and the spline shaft 33 transmits the received torque to the drive transmission member 12. The printing cylinder drive shaft 30 is supported by bearings 34 and 36, can receive a radial load and an axial load, and does not move in the axial direction.

Next, when torque is transmitted to the drive transmission member 12, the printing cylinder 10 rotates.
The printing cylinder 10 is pivotally supported by the printing cylinder bearing 24, the printing cylinder bearing 54, and the bearing 64. That is, the printing cylinder bearing 24 and the printing cylinder bearing 54 can receive only a radial load, and the bearing 64 can receive an axial load (and a radial load).
In the present embodiment, the bearings 34, 36, and 64 can also support the radial load of the printing cylinder 10. Further, the bearings 34 and 36 can support an axial load when the printing cylinder 10 is moved in the axial direction.

Here, the printing cylinder apparatus 1 is not limited to a configuration in which the radial load of the printing cylinder 10 is received by two bearings, that is, the printing cylinder bearing 24 and the printing cylinder bearing 54. For example, the printing cylinder bearing 24 is driven. One or more printing cylinder bearings 24 may be further provided on the side, and one or more printing cylinder bearings 54 may be further provided on the operation side of the printing cylinder bearing 54. If it does in this way, since the bending of the printing cylinder 10 can further be suppressed, the further speed-up and the lengthening of the printing cylinder 10 can be achieved. In addition, the print quality during high-speed printing can be improved.
The newly added bearing is usually the same bearing as the printing cylinder bearing 24 and the printing cylinder bearing 54, but is not limited to this. For example, a bearing larger than the printing cylinder bearing 24 and the printing cylinder bearing 54 is used. It is good.

  In this embodiment, the bearing 64 is provided as a single configuration. However, the present invention is not limited to this. For example, the configuration is substantially the same as that of the bearing 34 and the bearing 36 of the printing cylinder drive shaft 30, and is provided at two locations. It is good also as a structure which provides a bearing. In this way, it is possible to receive a larger axial load (and radial load).

  Moreover, the printing cylinder apparatus 1 of this embodiment can move the printing cylinder 10 to an axial direction by providing the printing cylinder position adjustment axis | shaft 60, the bearing 64, the bearing holder 67, the bearing holder 68, etc. FIG. That is, when it is necessary to adjust the position movement of the printing cylinder 10 in the axial direction, when the above-described position adjustment bolt is tightened into the female screw 681 (turned clockwise), the bearing retainer 67 and the bearing retainer 68 are moved to the operation side. When moved and loosened (turned counterclockwise), the bearing retainer 67 and the bearing retainer 68 move to the drive side. As a result, the printing cylinder 10 connected to the printing cylinder position adjusting shaft 60 is adjusted in the axial position.

Next, the bending amount of the printing cylinder 10 in the printing cylinder apparatus 1 will be described.
During printing, the printing cylinder 10 is pressurized in line contact with the printing pressure or transfer pressure, and the pressurization causes bending.
Maximum deflection = (5/384) × W × L ⁴ / EI Formula (1)
In the formula (1), W is an evenly distributed load, L is a distance between bearings, and EI is a bending rigidity.
According to this equation (1), the structural factor related to the deflection of the printing cylinder 10 is a factor in which the distance between the bearings of L is large.

  The bending rigidity of EI is an element related to the cylinder diameter (outer diameter), length, and material of the printing cylinder 10. However, the outer diameter and length of the printing cylinder 10 in a rotary printing press equipped with a printing cylinder device is the size of the printed matter, for example, in the case of Japanese size newspaper, the length of one page is 546 mm (the printing cylinder 10 The outer diameter is approximately 546 / π mm), and the width of 4 pages is 1626 mm (the length of the printing cylinder 10 is approximately 1740 mm). As for the material, cast steel or stainless steel is generally used. If a material having high rigidity other than these, such as titanium steel, is used, the cost will be significantly increased.

In the printing cylinder apparatus 1, the printing cylinder bearing 24 is attached to the tip of the drive side bearing support sleeve 20, the printing cylinder bearing 54 is attached to the tip of the operation side bearing support sleeve 50, and further, the drive side Since the bearing support sleeve 20 and the operation side bearing support sleeve 50 are inserted into the insertion hole 11, L (inter-bearing distance) can be effectively shortened. That is, when the printing cylinder 10 of the printing cylinder apparatus 1 is a plate cylinder, the maximum deflection is such that even if it is rotated to the maximum speed range under pressure, it can be absorbed by the uniform blanket rubber layer and cushion layer. The amount can be suppressed, and the transfer pressure, which is the basis of the print quality, can be ensured uniformly with respect to the blanket cylinder (not shown).
The drive-side bearing support sleeve 20 and the operation-side bearing support sleeve 50 protrude from the drive-side frame 41 and the operation-side frame 43 by a predetermined length, causing a slight bend. However, since the drive side bearing support sleeve 20 and the operation side bearing support sleeve 50 are fixed to the drive side frame 41 and the operation side frame 43 and do not rotate, a state in which minute deflection is generated is maintained, and the printing cylinder 10 is maintained. It does not adversely affect the deflection of

Regarding printing efficiency, the printing cylinder apparatus 1 is attached to the plate cylinder because the size of the printing cylinder 10 is approximately four pages wide in the axial direction and the circumference is one page in the vertical direction of the newspaper. The number of plates produced can be cut in half. Further, even when the printing plate is frequently changed, the production time and replacement time can be reduced, and the running cost can be reduced.
Furthermore, the printing cylinder apparatus 1 can be suitably applied as a printing cylinder 10 that performs printing with an extended width.

As described above, according to the printing cylinder apparatus 1 of the present embodiment, excellent print quality can be realized even when high-speed printing is performed, and the printable range is expanded by 1-2 pages in the width direction. In addition, the printing efficiency can be improved, and the running cost can be reduced by halving the number of replacement printing plates at the time of plate change and the replacement-free printing plates.
Moreover, the printing cylinder apparatus 1 of this embodiment has various application examples.
For example, the printing cylinder apparatus 1 of the present embodiment is configured to rotate the printing cylinder 10 using the printing cylinder drive shaft 30 or the like, but is not limited thereto.

[Second embodiment of printing cylinder apparatus]
FIG. 2 a shows a schematic cross-sectional view of the main part on the drive side of the printing cylinder apparatus according to the second embodiment of the present invention.
FIG. 2B is a schematic cross-sectional view of the main part on the operation side of the printing cylinder apparatus according to the second embodiment of the present invention.
2a and 2b, the printing cylinder apparatus 1a of this embodiment is different from the printing cylinder apparatus 1 of the first embodiment described above in that the printing cylinder position adjusting shaft 60 is not provided. The other configuration of the present embodiment is almost the same as that of the printing cylinder apparatus 1.
Therefore, in FIGS. 2a and 2b, the same components as those in FIGS. 1a and 1b are denoted by the same reference numerals, and detailed description thereof is omitted.
Further, the printing cylinder apparatus 1a of the present embodiment and the printing cylinder apparatus 1b described later are used in place of the blanket cylinder B of the newspaper offset rotary printing press 200, but are not limited thereto. That is, the printing cylinder apparatus 1a, 1b is a printing cylinder (a printing cylinder (a printing cylinder that does not need to be moved in the axial direction, for example, a printing cylinder that performs ink printing) of a rotary printing press that includes printing units having various configurations, At least one of a blanket cylinder and an impression cylinder).

As shown in FIG. 2A, the drive side of the printing cylinder 10a is formed with an insertion hole 11a that is not grooved for attaching a bearing retaining ring (for hole) 113, as compared with the first embodiment. Are supported by a printing cylinder bearing 24a.
The printing cylinder bearing 24a is a cylindrical roller bearing (a type having a collar) that can receive a radial load and an axial load. For example, in an NUP type cylindrical roller bearing, when the inner ring is fixed, the outer ring and the inner ring cannot be separated. That is, the outer ring of the NUP type cylindrical roller bearing is inserted into the insertion hole 11a in a state where the inner ring and the collar ring are fixed to the drive side bearing support sleeve 20 by the stepped collar 25, the bearing lock nut 26, or the like. .

As shown in FIG. 2b, the operation side of the printing cylinder 10a is not subjected to processing for fixing the front end portion of the printing cylinder position adjusting shaft 60 as compared with the first embodiment, and the bearing retaining ring. An insertion hole 11a ′ that is not subjected to groove processing for attaching (for hole) 113 is formed, and is supported by a printing cylinder bearing 54a.
The printing cylinder bearing 54a is a cylindrical roller bearing (a type having a collar) that can receive a radial load and an axial load. For example, in an NUP type cylindrical roller bearing, when the inner ring is fixed, the outer ring and the inner ring cannot be separated. That is, the outer ring of the NUP type cylindrical roller bearing is inserted into the insertion hole 11a ′ in a state where the inner ring and the collar ring are fixed to the operation side bearing support sleeve 50a by the stepped collar 55, the bearing lock nut 56, or the like. The

Thus, in this embodiment, the printing cylinder 10a rotates at a predetermined position in the axial direction by being pivotally supported by the printing cylinder bearings 24a and 54a described above.
The printing cylinder bearing 24a and the printing cylinder bearing 54a are not limited to NUP type cylindrical roller bearings, and a bearing such as a tapered roller bearing or a combination thereof can be used.

Compared to the first embodiment, the operation-side bearing support sleeve 50a has a structure in which no insertion hole for inserting the bearing retainer 67 or the like is provided in the flange portion 53a and the attachment portion 51a.
In addition, the other structure and operation | movement of the printing cylinder apparatus 1a of this embodiment are as substantially the same as 1st embodiment.

  As described above, according to the printing cylinder apparatus 1a of the present embodiment, it is suitably applied (in a state where the manufacturing cost is reduced) to the printing cylinder 10a that does not need to adjust the printing cylinder position. be able to. Furthermore, even if high-speed printing is performed, excellent print quality can be realized, and printing efficiency can be improved including expanding the printable range by one or two pages in the width direction. In addition, since the printing cylinder 10a is approximately four pages wide in the axial direction and one page long in the longitudinal direction of the newspaper, the size of the blanket can be reduced.

Further, in the present embodiment, the printing cylinder 10a that is not subjected to the groove processing for attaching the bearing retaining ring (for the hole) 113 or the processing for fixing the front end portion of the printing cylinder position adjusting shaft 60 is used. However, the present invention is not limited to this. For example, the printing cylinder 10 can be used in place of the printing cylinder 10a, and parts can be shared.
Further, the operation-side bearing support sleeve 50 can be used instead of the operation-side bearing support sleeve 50a. In this case, the printing cylinder bearings 24a and 54a are replaced with the printing cylinder bearings 24 and 54, and the printing cylinder position is adjusted. By providing the shaft 60 and the like, the fixed printing cylinder (printing cylinder 10a) can be easily changed to a movable printing cylinder (printing cylinder 10).

[Third embodiment of printing cylinder apparatus]
FIG. 3 a shows a schematic cross-sectional view of the main part on the drive side of the printing cylinder apparatus according to the third embodiment of the present invention.
FIG. 3b is a schematic cross-sectional view of the main part on the operation side of the printing cylinder apparatus according to the third embodiment of the present invention.
3a and 3b, the printing cylinder apparatus 1b of the present embodiment is different from the printing cylinder apparatus 1a of the second embodiment in that a printing cylinder driving shaft 30b is provided instead of the printing cylinder driving shaft 30. To do. In addition, the other structure of this embodiment is as substantially the same as the printing cylinder apparatus 1a.
Therefore, in FIGS. 3a and 3b, the same components as those in FIGS. 2a and 2b are denoted by the same reference numerals, and detailed description thereof is omitted.

As shown in FIG. 3a, the printing cylinder drive shaft 30b has a flange portion 31b screwed to an end portion on the drive side via a key 32b. The flange portion 31b has a printing cylinder driving gear 42b having an opening at the center portion screwed to an end surface on the driving side. Moreover, the flange part 31b has a stepped collar part on the operation side. The stepped collar portion is in contact with the inner ring of the bearing 34b at the tip end surface.
The bearing 34b is an angular ball bearing or the like. The inner ring is fixed to the printing cylinder drive shaft 30b by a bearing retaining ring (for shaft) 33b and the stepped collar portion, and the outer ring is a step between the step of the mounting portion 21b and the bearing. The presser 28 is fixed to the drive side bearing support sleeve 20b.

The printing cylinder drive shaft 30b is formed with an insertion portion 36b and a flange portion 35b having substantially the same structure as the insertion portion 63 and the flange portion 62 of the printing cylinder position adjusting shaft 60 described above at the end on the operation side. The fitting part 36b is cylindrical and is inserted into the fitting hole of the insertion hole 11a, and the flange part 35b is screwed to the lower part step 112.
Further, the drive side bearing support sleeve 20b has a mounting portion 21b corresponding to the bearing 34b, and the rest is substantially the same as the drive side bearing support sleeve 20.

In the printing cylinder driving shaft 30b having the above-described configuration, first, the flange portion 35b is screwed into the printing cylinder 10a, and then the driving-side bearing support sleeve 20b is inserted into the insertion hole 11a, and the printing cylinder 10a is supported by the printing cylinder bearing 24a. It is pivotally supported.
Next, a bearing retaining ring (for shaft) 33b is attached, subsequently, a bearing 34b is inserted, and an outer ring of the bearing 34b is fixed to the driving side bearing support sleeve 20b by the bearing retainer 28.
Next, the flange portion 31b is screwed to the printing cylinder driving shaft 30b via the key 32b, and then the printing cylinder driving gear 42b is screwed.

  As described above, in the present embodiment, the use of the printing cylinder drive shaft 30b and the drive-side bearing support sleeve 20b eliminates the need for complicated machining such as spline processing and reduces the number of components. As a result, the manufacturing cost can be reduced.

Further, as shown in FIG. 3B, the operation side bearing support sleeve 50b of the present embodiment has a structure having an attachment portion 51b, an insertion portion 52b, and a flange portion 53b in which no through hole is formed. In this case, since it is not necessary to machine the through hole, the manufacturing cost can be reduced.
In addition, the other structure and operation | movement of the printing cylinder apparatus 1b of this embodiment are as substantially the same as 2nd embodiment.

  As described above, according to the printing cylinder apparatus 1b of the present embodiment, it is possible to reduce the manufacturing cost by significantly reducing the cost of machining. Furthermore, even if high-speed printing is performed, excellent print quality can be realized, and printing efficiency can be improved including expanding the printable range by one or two pages in the width direction.

[One embodiment of a rotary printing press provided with a printing cylinder device]
The present invention is also effective as an invention of a rotary printing press provided with a printing cylinder device.
FIG. 4 is a schematic view for explaining a rotary printing press according to an embodiment of the present invention.
The newspaper offset rotary printing press 2 according to the present embodiment is printed in place of the blanket cylinder B and the plate cylinder P of the printing units U1, U2, U3, U4, and U5, as compared with the newspaper offset rotary printing press 200 described above. A difference is that a blanket cylinder B1 and a plate cylinder P1 including the cylinder apparatuses 1, 1a, and 1b are provided. In addition, the other structure of this embodiment is as substantially the same as the web offset press 200 for newspapers.
Therefore, in FIG. 4, the same components as those in FIG. 7 are denoted by the same reference numerals, and detailed description thereof is omitted.

The web offset press 2 for newspaper according to this embodiment includes a plate cylinder P1 including a printing cylinder device 1 instead of the plate cylinders P of the printing units U2, U3, and U4, and includes the printing units U2, U3, and U4. Instead of the blanket cylinder B, a blanket cylinder B1 including a printing cylinder device 1b is provided.
In addition, although it is set as the structure provided with blanket cylinder B1 which consists of printing cylinder apparatus 1b in printing part U2, U3, U4, it is not limited to this, For example, the structure provided with blanket cylinder B1 which consists of printing cylinder apparatus 1a It is good.

Further, the newspaper offset rotary printing press 2 includes a plate cylinder P1 including the printing cylinder device 1 instead of the plate cylinder P of the printing units U1 and U5, and instead of the blanket cylinder B of the printing units U1 and U5. A blanket cylinder B1 including the printing cylinder apparatus 1a is provided.
In addition, although it is set as the structure provided with the printing cylinder P1 (Eight printing cylinders P1 in each printing part) which consists of the printing cylinder apparatus 1 in printing part U1, U5, it is not limited to this, For example, a printing part It is good also as a structure provided with the printing cylinder P1 which consists of the printing cylinder apparatus 1a in the reference | standard cylinder (printing cylinder which performs ink printing) of U1 and U5.
In addition, the printing units U1 and U5 are configured to include the blanket cylinder B1 including the printing cylinder apparatus 1a. However, the present invention is not limited thereto. Good.

  As described above, by providing the blanket cylinder B1 and the plate cylinder P1 composed of the printing cylinder devices 1, 1a, 1b, the blanket cylinder B1 and the plate cylinder P1 are rotated to the maximum speed range in a state of being pressurized. However, the maximum amount of deflection can be suppressed to such an extent that it can be absorbed by the rubber layer and the cushion layer of the uniform blanket, and the transfer pressure and the printing pressure that are the basis of the print quality can be ensured.

As for printing efficiency, the blanket cylinder B1 and the plate cylinder P1 have the printing cylinders 10 and 10a having a size of about four pages in the axial direction and a circumference of one page in the longitudinal direction of the newspaper. The number of plates produced on the plate cylinder can be cut in half. Further, even when the printing plate is frequently changed, the production time and replacement time can be reduced, and the running cost can be reduced.
Furthermore, the blanket cylinder B1 and the plate cylinder P1 can also be suitably applied as the printing cylinders 10 and 10a that perform printing with an extended width.

  As described above, according to the newspaper rotary offset press 2 of this embodiment, excellent print quality can be realized even when high-speed printing is performed, and the printable range is expanded by one to two pages in the width direction. In addition, the printing efficiency can be improved, and the running cost can be reduced by halving the number of replacement printing plates at the time of plate replacement or replacement-free printing plates.

In the newspaper rotary offset printing press 2, the blanket cylinder B1 and the plate cylinder P1 have the printing cylinders 10 and 10a having a circumference of one page in the newspaper longitudinal direction, but are not limited thereto. For example, in the blanket cylinder B1, the circumference of the printing cylinder 10a may be two pages in the newspaper longitudinal direction. Further, the blanket cylinder B1 does not need to be adjusted in the axial direction even if the circumference of the printing cylinder 10a is one page in the newspaper longitudinal direction or two pages.
Further, although not shown in the figure, when the newspaper offset rotary printing press 2 uses an impression cylinder, a blanket cylinder B1 having a circumference of one page in the newspaper vertical direction and a plate having a circumference of one page in the newspaper vertical direction are usually used. The cylinder P1 and the circumference are provided with an impression cylinder for two pages in the longitudinal direction of the newspaper.

As described above, the printing cylinder apparatus and the rotary printing press provided with the printing cylinder apparatus according to the present invention have been described with reference to the preferred embodiments.However, the rotary printing press provided with the printing cylinder apparatus and the printing cylinder apparatus according to the present invention includes: Needless to say, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention.
For example, the printing cylinder apparatus 1 has been described using the printing cylinder 10 as a plate cylinder, but can be applied as a structure for other printing cylinders and rotating cylinders for which bending is desired to be suppressed.

1, 1a, 1b Printing cylinder device 2, 200 Newspaper offset rotary press 3 Paper feed unit
4 Rail frame
5 Folding part
10, 10a Printing cylinder
11, 11a, 11a 'insertion hole
12 Drive transmission member
20, 20b Drive side bearing support sleeve
21, 21b Mounting part
22 Insertion part
23 Flange
24, 24a Printing cylinder bearing
25 Stepped color
26 Bearing lock nut
27 Washer for Bearing Lock Nut
28 Bearing presser
30, 30b Printing cylinder drive shaft
31, 31b Flange
32 Male thread
32b Key 33 Spline shaft
33b Bearing retaining ring (for shaft)
34, 34b Bearing
35 distance color
35b Flange 36 Bearing
36b Insertion part 37 Stepped collar
38 Bearing lock nut
39 Washer for bearing lock nut
41 Drive side frame
42, 42b Printing cylinder drive gear
43 Operation side frame
50, 50a Operation side bearing support sleeve
51, 51a Mounting portion 52 Insertion portion 53, 53a Flange portion 54, 54a Printing cylinder bearing
55 Stepped color
56 Bearing lock nut
57 Washer for bearing lock nut
60 Printing cylinder position adjustment axis
61 Male thread
62 Flange
63 Insertion
64 Bearing
65 Bearing lock nut
66 Washer for Bearing Lock Nut
67 Bearing presser
68 Bearing presser
111 Middle step
112 Low step
113 Bearing retaining ring (for holes)
681 Female thread
B, B1 Blanket cylinder P, P1 Plate cylinder U1, U2, U3, U4, U5 Printing section

Claims (7)

A printing cylinder having insertion holes formed on both end faces;
A bearing support member having an insertion portion to be inserted into the insertion hole, and an attachment portion fixed to the frame;
A printing cylinder bearing provided at at least a tip of the insertion portion and rotatably supporting the printing cylinder;
A printing cylinder characterized in that the bearing support member has a cylindrical shape, and a printing cylinder drive shaft for transmitting driving torque to the printing cylinder is rotatably provided in the cylindrical bearing support member. apparatus. (Delete)   The printing cylinder apparatus according to claim 1, wherein a leading end portion of the printing cylinder driving shaft is fixed to the printing cylinder.   The printing cylinder apparatus according to claim 1, wherein the printing cylinder bearing is a bearing having an inner ring and an outer ring that are relatively movable in the axial direction.   The printing cylinder apparatus according to claim 4, wherein a connection portion between the printing cylinder and the printing cylinder drive shaft is movable in an axial direction.   A rotary printing press provided with a printing cylinder apparatus, wherein the printing cylinder apparatus according to any one of claims 1 to 5 is used as at least one of a plate cylinder, a blanket cylinder, and an impression cylinder.   The rotary printing press provided with the printing cylinder apparatus according to claim 6, wherein the circumference of the printing cylinder of the printing cylinder apparatus is one page in the newspaper longitudinal direction.

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